lru_add_drain

Name:Drain pages out of the cpu's pagevecs.* Either "cpu" is the current CPU, and preemption has already been* disabled; or "cpu" is being hot-unplugged, and is already dead.

Proto:void lru_add_drain_cpu(int cpu)

Type:void

Parameter:

Type	Parameter	Name
int	cpu

596

pvec = per_cpu(lru_add_pvec, cpu)

598

If pagevec_count(pvec) Then Add the passed pages to the LRU, then drop the caller's refcount* on them. Reinitialises the caller's pagevec.

601

pvec = per_cpu(lru_rotate_pvecs, cpu)

602

If pagevec_count(pvec) Then

606

local_irq_save(flags)

607

pagevec_move_tail() must be called with IRQ disabled.* Otherwise this may cause nasty races.

608

local_irq_restore(flags)

611

pvec = per_cpu(lru_deactivate_file_pvecs, cpu)

612

If pagevec_count(pvec) Then pagevec_lru_move_fn(pvec, If the page can not be invalidated, it is moved to the* inactive list to speed up its reclaim. It is moved to the* head of the list, rather than the tail, to give the flusher* threads some time to write it out, as this is much more, NULL)

615

pvec = per_cpu(lru_deactivate_pvecs, cpu)

616

If pagevec_count(pvec) Then pagevec_lru_move_fn(pvec, lru_deactivate_fn, NULL)

619

pvec = per_cpu(lru_lazyfree_pvecs, cpu)

620

If pagevec_count(pvec) Then pagevec_lru_move_fn(pvec, lru_lazyfree_fn, NULL)

623

activate_page_drain(cpu)

**Caller**
Name	Describe
lru_add_drain
page_alloc_cpu_dead

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